Portero
Let's face it, eBay can be a gamble when it comes to purchasing luxury items. Enter Portero.com, an auction site offering fully authenticated pristine and pre-owned luxury goods updated weekly. The main draw is its huge selection of timepieces from the biggest brands in the world — whether you are looking for the boxiness of a Bell & Ross or the understated elegance of a hard-to-find vintage Patek Philippe, the prices and selection can't be beat.